← Search Econometrica Vol. 24 No. 2 1956 Firm Progress Ratios Werner Z. Hirsch DOI10.2307/1905747 Volume24 Issue2 Pages136 Sources semanticscholar openalex crossref Cite APA 7 MLA 9 Chicago (author–date) Harvard Elsevier Harvard (JFE, JBF…) The Accounting Review Academy of Management American Marketing Association INFORMS (Management Science) Copy citation Copied ✓